Which of the following words is closest in meaning to “Dreadful”?

Dreadful means horrible.

• Correct answer - horrible: it has the same meaning as Dreadful.
• poisonous: containing poison - wrong, it does not mean the same as Dreadful.
• lifeless: without life - wrong, it does not mean the same as Dreadful.
• illusory: based on illusion - wrong, it does not mean the same as Dreadful.